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UNITED STATES PATENT OFFICE.

A'UGUSTE J. ROSSI, OF FALLS, NEW YORK, ASSIGNOR TO .THE TITANIUM ALLOY MANUFACTURING COMBANY, OF NEW YORK, N. Y., A CORPORATION '0F MAINE.

METALLIC BODY.

986,645. l Spccication of Letters Patent. Patented B131', 14, 1911,

Original application led Aprl'l, 1908, Serial No. 425,864. Divided and this application vled Hay 18, 1910. Serial No. 561,933.

tent of titanium conglomerated therewith,

and' its final content of the added metal.

To all it may concern: -and this without distorting or substantially 55 A -Be it known that I, AUGUSTE J. ROSSI, a changing the form of the metallic body, or citizen of the United States, and aresident article treated, thereby imparting thereto of the city of Niagara Falls, county of inew and desired characteristics, properties,

agara, and State of New York, have 1ncapacities and behavior. Y

vented certain new and useful Improve- That those skilled in the art may better 60 ments in Metallic Bodies, of which the folunderstand my procedure, I. will mention, lowing is a specification. for illustration, the following examples, viz:

The object of my present invention is to I have treated, by my said process, a ferrie incorporate into a given metallic body, o1' body', z'. e. a steel disk, said disk being oneinto portions thereof as required, aldesired half inch in thickness and five inches in 65 addition of titanium, and to accomplish thisl diameter as follows, viz: In an ordinary without fusion or mechanical treatment. I graphite receptacle I packed the said disk in attain this object by my vnovel process as powdered ferro-titanium (the alloy of iron follows, viz: I pack the metallic body, or and titanium) pulverized to pass through a those portions thereof to be permeated by inch mesh, or finer. Said ferro-titanium 70 titanium, in a powder composed of, or concontained about 20% of titanium and 80% taining in powdered state an alloy of titaof iron. I closely packed said powdered nium with, preferably, the same metal as ferro-titanium on all sides of said disk. The

2O that constitutin or preponderating in said graphite receptacle, and its said contents,

body. I then su ject the mass to a high temwere then, in a Crucible, raised to a temperaperature approximating, but, in all cases, ture indicated by a bright yellow heat and lower than the fusing point of said met-als, maintained in this temperature during about or either of them, and maintain said temper-v four hours. The said disk on cooling, and

25 ature until the desired amount of incorpora, removal from the remaining powder, was

tion and permeation has been effected. On found to contain, near its suirfacefifrom coolinfr and withdrawing the metallic body 0.65%. to 0.72% of titanium, said titanium treate it will be found to have absorbed having been apparently as aforesaid aband to contain, in permeations from its sursorbed by the steel, and imparting thereto,

80 face, inwardly more or less of the titanium where present, greatly increased toughness contained in said powder, the extent ofsaid and hardness. On another occasion a simi- 85 incorporation, permeation and absorption Of lar disk 0f copper was treated in all respects said titanium being inversely, proportional `as before, except that it was packed in to its distance from that surface of the mepowdered cupro-titanium. (the alloy of ooptallic body through which tho-.titanium has per and titanium) containing about 90% of entered it. The titanium appearsto be abcopper and 10% of titanium, and in this in- 90 sorbed, or to have ermeated, as aforesaid, stance, the copper disk, -at the conclusion of in minute subdivisions or particles, which the operation, was found to contain, near are found Conglomerated Wit-h the mtl its surface 2.72% of titanium, with corre- 40-constitutin the said metallic body, or is, as Sponding similar increase of toughness and it were, a oyed with said metal with howhardness, I have further disccvered that; ever the notable characteristic that, other the amount 0f such other metal absorbed or things being equal, the respective number of incorporated into the metallic body treated said particles so to speak, indifferent planes by my process as aforesaid, and the degree 45 projectedthrough said metallic body in arof the penetration of such other metal into allelism with that surface thereof whic is such metallic body, may, within limits, be proximate to said plane is inversely proporregulated as desired. by varying the protional to `the, distance of such planerom portion of such other metal inthe powder suchV surface. There is thus imparted to the m which the metallic body is packed, or by 50 metallic body treated, where and to the exvarying the duration of the said treatment.

tent required, and without resort to me- Thus the absorption, or impregnation, may chanical means, as drilling or the like, and be extended from the surface inwardly, even also without resort to fusion, an actual conto the center of the metallic body treated,

found to have absorbed, in addition to the tive location of the absorbed, or permeating titanium, some carbon.

The manifold utilities of my present invention will be obvious to those skilled in the art,-steel armor plate, for instance, can thereby be hardened and toughened t or near 'its vsurface by incorporation there of titanium, and thus new and desirable qualities, suchas hardness, imparted to the plate near its surface Without affecting other normal desired qualities of the steel through- I 4out the remainder of said plate.

The temperature required, as aforesaid, for the ractice of isaid processmay be produce and applieclI to the materials employed, in any convenient manner, depending u on the character, size, etc., -of the metallic body treated, as for instance in a gas furnace, in an open hearth coke fire, or electrically as by a resistance or otherwise.

The annexed drawing indicates symbolically the supposed arrangement and relaoseis metal, in fragment of a steel plate A shown 1n section without hatchings, the dots suggesting the relative location and extent of the particles of incorporated met-al extendin from each surface of the plate inwardly.

y present application for patent is a division of my pending application, Serial No. 425,864, filed April 8th 1908.

HavingI thus described my invention,

what I claim as new and desire to secure by Letters Patent is the following, viz

1. A metallic body conglomerated with impregnations of titanium, the extent of such impregnations being, in any plane parallel with that of the proximate surface of said body, substantially in inverse ratio o the distance of said plane from said surace.

pregnations of titanium, the extent of such impregnations being, in any plane parallel with that of the proximate surface of said body, substantially in inverse ratio to the distance of said plane from said surface.

3. A steel body conglomerated with irnpregnations of titanium, the extent of such impregnations being, in any plane parallel with that of the proximate surface of said body, substantially in inverse ratio to the distance of said plane from said surface.

AUGUSTE J. ROSSI.

Witnesses:

WALTER D. EDMONDS, PHILIP C. Pncx. 4

2. A ferric body conglomerated with imi 

